Guide Bushing System

Abstract

The present invention relates to a guide bushing system 100, comprising a guide bushing 10 configured to receive a guide clamp 20, a plurality of guide clamps 20 of different types that can be introduced into the guide bushing 10, a drive unit 30 configured to perform axial movement of at least one of the guide clamps 20 inside the guide bushing 10, and a plurality of spindle caps 40 each adapted to at least one type of one of the plurality of guide clamps 20, wherein each spindle cap 40 of the plurality of spindle caps 40 can be connected to the guide bushing 10 for cooperation with the guide clamp 20 to which the respective spindle cap 40 is adapted.

Description

[Technical Field]

[0001] The present invention relates to a guide bush, in particular a guide bush configured to receive a guide collet and having a drive that acts on the guide collet and is configured to effect axial movement of the guide collet inside the guide bush, a guide collet that can be inserted into the guide bush, and a spindle cap that can be connected to the guide bush and that is adapted to the design of the guide collet, whether it is a pull-type guide collet, a thrust-type guide collet, a double-cone guide collet, or a standard guide collet. [Background technology]

[0002] Guide bushes and collets known, for example, from US Pat. No. 5,629,499, US Pat. No. 5,629,499 and US Pat. No. 5,629,499 are used to hold and guide a bar of material to be machined during the machining process and to support it against machining forces. In this way, very long and thin workpieces can be produced with low machining tolerances. Variations in the diameter of the material bar are compensated for using the guide bush, so that bars of different diameters can always be processed using the same guide bush. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] German Patent Application Publication No. 10 2017 105 872 [Patent Document 2] German Patent Application No. 10 2014 018 695.4 [Patent Document 3] German Patent Invention No. 10 2017 123 811 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in practice, it often happens that a different type of collet is required for machining a workpiece, and so the entire guide bushing must be removed and replaced with another guide bushing having the desired type of guide collet.

[0005] A drawback to this procedure is the high cost in terms of materials, time, and labor involved in maintaining and replacing the guide bushings.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to create a simply constructed and universally usable guide bushing that can be used with guide collets of different designs. [Means for solving the problem]

[0007] According to the invention, this object is solved by a guide bushing system with the features of claim 1. The dependent claims disclose advantageous embodiments of the invention.

[0008] The basic idea of ​​the present invention is to create a guide bushing system with guide bushings that do not require any special adaptation to accommodate the collet, so that in principle any guide collet from a plurality of differently designed guide collets can be inserted into the guide bushing of the system according to the invention (to create a guide bushing system with guide bushings that do not require any special adaptation to accommodate the collet, so that in principle each guide collet from a plurality of differently designed guide collets can be inserted into the guide bushing of the system according to the invention). At the same time, a plurality of spindle caps are provided that are in each case adapted to at least one design of one of the plurality of guide collets, each spindle cap being connectable to the guide bushing and that, when connected to the guide bushing, cooperate with the guide collet to which it is adapted.

[0009] In particular, the spindle caps of systems designed according to the invention have beveled edges adapted to the type of guide collet: for example, if a double-drilled collet is used, a beveled start is required on the side of the spindle cap facing the guide bush, while if a retractable collet is used, a beveled start is required on the side of the spindle cap facing away from the guide bush.

[0010] If necessary, the system also has a number of actuators, each adapted to the design of at least one of the plurality of guide collets, which can also be exchanged as required and which can be connected, on the one hand, to cooperate with the drive unit and, on the other hand, to cooperate with the guide collet to which the respective actuator is adapted.

[0011] According to the present invention, therefore, a guide bushing system is proposed, comprising a guide bushing configured to receive a guide collet, a plurality of guide collets of different types that can be inserted into the guide bushing, a drive unit configured to perform axial movement of at least one of the guide collets inside the guide bushing, and a plurality of spindle caps each adapted to the design of at least one of the plurality of guide collets, each of which can be connected to the guide bushing for cooperation with the guide collet to which it is adapted.

[0012] The guide bushing system is therefore designed so that each guide collet of the system can be inserted into the guide bushing and put into operation by a spindle cap designed to match the design of the guide collet. The spindle caps can be connected to the guide bushings using different connection means, but it is preferred that the spindle caps be connected to the guide bushings using the same connection means. The connection means can be designed as a separate element or can be a device, such as a thread, formed on the guide bushing and / or guide collet.

[0013] Also provided are a plurality of actuators each adapted to the design of at least one of the plurality of guide collets, each actuator configured for cooperation with the drive and the guide collet to which the respective actuator is adapted.

[0014] The plurality of guide collets preferably includes at least one pulling collet and / or at least one push-in collet and / or at least one double-drill collet and / or a standard guide collet. It is particularly envisioned that the plurality of guide collets includes at least two guide collets of different designs selected from a group of guide collets including pulling-type guide collets, push-in collets, double-drill collets, and standard guide collets. It is particularly envisioned that the plurality of guide collets includes a pulling collet and a push-in collet, or a double-drill collet, or a standard collet. Alternatively, it is envisioned that the plurality of guide collets includes a double-drill collet and a pulling collet, or a push-in collet, or a standard guide collet. As yet another alternative, it is envisioned that the plurality of guide collets includes a push-in collet and a double-drill collet, or a pulling collet, or a standard guide collet. Finally, it is alternatively provided that the plurality of guide collets includes a standard guide collet and a push-in collet, or a double-drill collet, or a pulling collet. It is therefore particularly preferred that the actuators have at least one retracting element and / or one pushing element. In the case of a standard guide collet, a retracting element is also preferably provided, but when the standard guide collet is used, i.e., during operation of the guide bush, the inner diameter remains constant and is not subject to any radial adjustment. This is ensured by inserting the standard guide collet into the guide bush to a predetermined depth and thus to a predetermined inner diameter, in particular by screwing it onto it to fix it in place, in particular by taking the drive out of operation.

[0015] It is particularly preferred that each actuator of the plurality of actuators is removably connected to the drive unit.

[0016] Finally, each spindle cap preferably has threads configured to screw onto the threads on the guide bushing. This design allows for a secure and precise attachment of the spindle cap to the guide bushing, and allows for quick replacement of the spindle cap, guide clamp, and, if necessary, the actuator.

[0017] The invention will now be described in more detail with reference to particularly preferred designed embodiments thereof as illustrated in the accompanying drawings. [Brief explanation of the drawings]

[0018] [Figure 1] 1 shows a particularly preferred embodiment of a guide bush equipped with a double cone collet. [Figure 2] FIG. 1 shows a particularly preferred designed guide bush equipped with a standard guide collet. [Figure 3] FIG. 1 shows a particularly preferred design of guide bush equipped with a retraction collet. DETAILED DESCRIPTION OF THE INVENTION

[0019] The drawings therefore show, as a whole, a guide bushing system 100 with a guide bush 10 designed to receive in each case one guide collet 20, the guide collet 20 received by the guide bush 10 in the drawings being selected from a plurality of guide collets 20 of different designs which can be inserted into the guide bush 10, designed as a double cone collet in FIG. 1, as a standard guide collet in FIG. 2 and as a retractable collet in FIG. 3.

[0020] The guide bush 10 has a drive 30 (drive 30 configured to drive at least one of these guide collets 20...inside the guide bush 10) set up to drive the axial movement of at least one of these guide collets 20, i.e., the double cone collet shown in FIG. 1 and the push-in collet shown in FIG. 3. Depending on the design of the guide collet 20 inserted into the guide bush 10, the drive 30 has a pulling or pushing part 50 that can be removably connected to the drive 30. In FIG. 1 it can be seen that the drive 30 has a pushing part 50 that acts on the double cone collet 20, while in FIG. 3 the drive 30 is equipped with a pulling part 50 that acts on the pulling collet 50 (20).

[0021] In the case of the standard guide collet shown in Figure 2, the drive does not function because the inner diameter of the standard guide collet remains unchanged during the operation of the guide bush. Only proper fixation ensures that the standard guide collet cannot be displaced axially.

[0022] Finally, it can be seen in the drawings that a plurality of spindle caps 40 are provided, each adapted to the design of at least one of the plurality of guide collets 20, and that each of the plurality of spindle caps 40 can be connected to a guide bushing 10 to cooperate with the guide collet 20 to which it is adapted. In particular, it can be seen in the drawings that the spindle cap 40 used for the double-drilled collet in Figure 1 differs from the spindle cap 40 used for the standard guide collet in Figure 2 and from the spindle cap 40 used for the pull-in collet in Figure 3. In both cases, the spindle cap 40 has a thread designed to be screwed onto the thread provided on the guide bushing 10.

[0023] In the case of the double cone collet shown in Figure 1 and the pull-in collet shown in Figure 3, the spindle cap 40 forms a run-on slope adapted to the respective type of guide collet. In the case of the standard guide collet shown in Figure 2, the spindle cap 40 for standard guide collets forms a contact surface that limits the axial penetration depth into the guide bush 10. [Explanation of symbols]

[0024] 10: Guide bush 100: Guide bushing system 20: Guide collet 20: Double cone collet 30: Drive unit 40: Spindle cap 50: Pull-in or push-in parts

Claims

1. A guide bushing system (100), comprising: a guide bush (10) designed to receive a guide collet (20); a plurality of guide collets (20) of different designs that can be inserted into the guide bush (10); a drive (30) designed to effect axial movement of at least one of the guide collets (20) inside the guide bush (10); a plurality of spindle caps (40) each adapted to the design of at least one of the plurality of guide collets (20), each of the plurality of spindle caps (40) being connectable to the guide bush (10) for cooperation with the guide collet (20) to which the respective spindle cap (40) is adapted; A guide bushing system having:

2. 2. A guide bushing system (100) as described in claim 1, characterized by a plurality of actuators (50) each adapted to the design of at least one of the plurality of guide collets (20), each actuator configured for cooperation with the drive unit (30) and the guide collet (20) to which the respective actuator (50) is adapted.

3. 3. The guide bushing system (100) according to claim 1 or 2, characterized in that the plurality of guide collets (20) comprises at least one retracting collet.

4. A guide bushing system (100) according to any one of claims 1 to 3, characterized in that the plurality of guide collets (20) comprises at least one push-in collet.

5. A guide bushing system (100) according to any one of claims 1 to 4, characterized in that the plurality of guide collets (20) comprises at least one double cone collet.

6. A guide bushing system (100) according to any one of claims 1 to 5, characterized in that the plurality of guide collets (20) comprises at least one standard guide collet.

7. 4. The guide bushing system (100) according to claim 2 or 3, characterized in that the plurality of actuators (50) comprises at least one retraction component.

8. A guide bushing system (100) according to any one of claims 2 to 5, characterized in that the plurality of actuators (50) comprises at least one pushing element.

9. 3. The guide bushing system (100) of claim 2, wherein the plurality of guide collets includes at least two guide collets of different designs selected from a group of guide collets including a pull-in collet, a push-in collet, a double cone collet, and a standard guide collet.

10. 10. The guide bushing system (100) according to any one of claims 2 to 9, characterized in that each actuator (50) of the plurality of actuators (50) is detachably connected to the drive unit (30).

11. A guide bushing system (100) according to any one of claims 1 to 10, characterized in that each spindle cap (40) has a thread designed to be screwed onto a thread provided on the guide bush (10).

Images